acpi/acpica/hwvalid.c

1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
4  * Module Name: hwvalid - I/O request validation
6  * Copyright (C) 2000 - 2023, Intel Corp.
33  *  DMA:   DMA controller
37  *  RTC:   Real-time clock
39  *  DMA1:  DMA 1 page registers
40  *  DMA1L: DMA 1 Ch 0 low page
41  *  DMA2:  DMA 2 page registers
42  *  DMA2L: DMA 2 low page refresh
43  *  ARBC:  Arbitration control
47  *  IDMA:  ISA DMA
52 	{"DMA", 0x0000, 0x000F, ACPI_OSI_WIN_XP},
109 	last_address = address + byte_width - 1;  in acpi_hw_validate_io_request()
116 	/* Maximum 16-bit address in I/O space */  in acpi_hw_validate_io_request()
127 	if (address > acpi_protected_ports[ACPI_PORT_INFO_ENTRIES - 1].end) {  in acpi_hw_validate_io_request()
143 		if ((address <= port_info->end)  in acpi_hw_validate_io_request()
144 		    && (last_address >= port_info->start)) {  in acpi_hw_validate_io_request()
148 			if (port_info->osi_dependency == ACPI_ALWAYS_ILLEGAL ||  in acpi_hw_validate_io_request()
149 			    acpi_gbl_osi_data == port_info->osi_dependency) {  in acpi_hw_validate_io_request()
151 						  "Denied AML access to port 0x%8.8X%8.8X/%X (%s 0x%.4X-0x%.4X)\n",  in acpi_hw_validate_io_request()
153 						  byte_width, port_info->name,  in acpi_hw_validate_io_request()
154 						  port_info->start,  in acpi_hw_validate_io_request()
155 						  port_info->end));  in acpi_hw_validate_io_request()
163 		if (last_address <= port_info->end) {  in acpi_hw_validate_io_request()
181  * DESCRIPTION: Read data from an I/O port or register. This is a front-end
212 	 * There has been a protection violation within the request. Fall  in acpi_hw_read_port()
245  * DESCRIPTION: Write data to an I/O port or register. This is a front-end
275 	 * There has been a protection violation within the request. Fall  in acpi_hw_write_port()
315 	while (count--) {  in acpi_hw_validate_io_block()